Blame .gitignore

28e9591
/either-1.3.0.crate
63bfe55
/either-1.4.0.crate
cbd82ca
/either-1.5.0.crate
f3ab5b6
/either-1.5.1.crate
29d370a
/either-1.5.2.crate
64361f6
/either-1.5.3.crate